#ifndef HELPER_H
#define HELPER_H
#include <string>
#include <iostream>

using std::istringstream;
using std::string;
using std::cout;
using std::endl;

#define VARCHAR 0
#define INT 1
#define EQUAL '='
#define LARGER '>'

class Helper
{
public:
	Helper();
	~Helper();
	int StringtoInt(const string &str);
	//return an integer
	//convert a string represent an integer into an integer

	string toUpperString(const string& str);
	//return a string
	//param is a constant reference to a string
	//do not change the original string. use reference for efficiency
	//convert all characters in str to upper characters


};

#endif
